Determine if ID is page or post and query the ID

Question

I want to look up a page id and determine if it's a page or post. Then query that id and display stuff like title, featured image, etc.

This works for Pages:

    query_posts('page=' . $featured_tab); 

This works or Posts:

    query_posts('p=' . $featured_tab); 

This will tell me if $featured_tag is a post or page:

    get_post_type( $featured_tab ) 

But this does not work

    foreach ( $featarr as $featured_tab ) {
        if (get_post_type( $featured_tab ) == 'page') {
            $featured_tab_type = 'page=';
        } elseif (get_post_type( $featured_tab ) == 'post') {
            $featured_tab_type = 'p=';
        }
        query_posts($featured_tab_type . $featured_tab); 

        while (have_posts()) : the_post();    

           Echo 'stuff here';

The problem I am having is this...the $featured_tag variable represents an assigned page/post id that is displayed on a page.

So I feed in a string of id's, i.e., 34,543,2432,355... etc then take each id as $featured_tab and query for title, featured page and excerpt.

Then I display all the page/post id's in a three column table.

This work perfect but only if I query for one or the other but not both as I do in the if statement if post use p= or if page use page=.

When I use the if condition is get crazy results here if there are 9 ids, I get 50+ results...duplicates and only post no page are displayed.

Answer 1

You don't have to determine what type it is to query it, you just have to set the proper arguments to override defaults. First off, we'll use WP_Query to do additional queries instead of query_posts.

If we only set the p argument, post_type defaults to post, so we won't get any pages:

$query = new WP_Query(
    array(
        'p' => 13
    )
);

If we just add post_type and set it to any, we'll get whatever post ID 13 is, whether it's a post, page, attachment, etc..

$query = new WP_Query(
    array(
        'post_type' => 'any',
        'p' => 13
    )
);

If you have some post IDs and need to query all of them, you can get rid of the foreach loop and just do a single query for all the posts at once with the post__in argument:

$query = new WP_Query(
    array(
        'post_type' => 'any',
        'post__in' => array( 1, 2, 13, 42 )
    )
);

Answer 2

Ok figured it out:

query_posts(array (     
   'p' => $featured_tab,
   'post_type' => array('post', 'page'),
    )       
);

whereas $featured_tab is the id you are querying.